DTC B1497/97: BUS IC Communication Malfunction [10/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Air Conditioner / Active test.
5. Check the operation by referring to the table below.
   AIR CONDITIONER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Air Mix Servo Targ Pulse(D)	No. 2 air conditioning radiator damper servo sub-assembly (air mix (for driver side)) pulse	Min.: 0, Max.: 255	Operates between 5 and 103 pulses
   Air Mix Servo Targ Pulse(P)	No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)) pulse	Min.: 0, Max.: 255	Operates between 7 and 105 pulses
   Air Outlet Servo Pulse (D)	No. 1 air conditioning radiator damper servo sub-assembly (air outlet) pulse	Min.: 0, Max.: 255	Operates between 8 and 97 pulses
   Air Inlet Damper Targ Pulse	No. 1 blower damper servo sub-assembly (air inlet) pulse	Min.: 0, Max.: 255	Operates between 7 and 28 pulses
   Rear Air Mix Servo Targ Pulse*1	No. 3 air conditioning radiator damper servo sub-assembly (rear air mix) pulse	Min.: 0, Max.: 255	Operates between 29 and 113 pulses

   • *1: for 3 Zone Type

   OK

   Arm of the damper servo motor selected in the Active Test operates smoothly.

6. According to the test result, proceed to the next step.

   Result

   Result	Proceed to
   One of the damper servo motors is malfunctioning	A
   All of the damper servo motors are malfunctioning	B

Result: 

B 

See step  8

Result: 

A 

See step  2

1. According to the test result, proceed to the next step.

   Result

   Result	Proceed to
   Only the No. 2 air conditioning radiator damper servo sub-assembly (air mix (for driver side)) is malfunctioning	A
   Only the No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)) is malfunctioning	B
   Only the No. 1 blower damper servo sub-assembly (air inlet) is malfunctioning	C
   Only the No. 1 air conditioning radiator damper servo sub-assembly (air outlet) is malfunctioning	D
   Only the No. 3 air conditioning radiator damper servo sub-assembly (rear air mix) is malfunctioning	E

Result: 

B 

See step  4

Result: 

C 

See step  5

Result: 

D 

See step  6

Result: 

E 

See step  7

Result: 

A 

See step  3

1. Replace the No. 2 air conditioning radiator damper servo sub-assembly (air mix (for driver side)) (Refer to DISASSEMBLY [10/2014 - ] ).

   HINT: 

   Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal.

2. Check for DTCs.

   Result

   Result	Proceed to
   DTC B1497/97 is not output	A
   DTC B1497/97 is output	B

Result: 

A 

END 

Result: 

B 

See step  8

1. Replace the No. 1 air conditioning radiator damper servo sub-assembly (air mix (for front passenger side)) (Refer to DISASSEMBLY [10/2014 - ] ).

   HINT: 

   Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal.

2. Check for DTCs.

   Result

   Result	Proceed to
   DTC B1497/97 is not output	A
   DTC B1497/97 is output	B

Result: 

A 

END 

Result: 

B 

See step  8

1. Replace the No. 1 blower damper servo sub-assembly (air inlet) (Refer to DISASSEMBLY [10/2014 - ] ).

   HINT: 

   Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal.

2. Check for DTCs.

   Result

   Result	Proceed to
   DTC B1497/97 is not output	A
   DTC B1497/97 is output	B

Result: 

A 

END 

Result: 

B 

See step  8

1. Replace the No. 1 air conditioning radiator damper servo sub-assembly (air outlet) (Refer to DISASSEMBLY [10/2014 - ] ).

   HINT: 

   Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal.

2. Check for DTCs.

   Result

   Result	Proceed to
   DTC B1497/97 is not output	A
   DTC B1497/97 is output	B

Result: 

A 

END 

Result: 

B 

See step  8

1. Replace the No. 3 air conditioning radiator damper servo sub-assembly (rear air mix) (Refer to DISASSEMBLY [10/2014 - ] ).

   HINT: 

   Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or known good one and check that the condition returns to normal.

2. Check for DTCs.

   Result

   Result	Proceed to
   DTC B1497/97 is not output	A
   DTC B1497/97 is output	B

Result: 

A 

END 

Result: 

B 

See step  8

1. Replace the air conditioning harness assembly (Refer to REMOVAL [10/2014 - 10/2015] or REMOVAL [10/2015 - ] ).

   HINT: 

   Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or known good one and check that the condition returns to normal.

2. Check for DTCs.

   Result

   Result	Proceed to
   DTC B1497/97 is not output	A
   DTC B1497/97 is output	B

Result: 

A 

END 

Result: 

B 

See step  9

1. Disconnect the D62 air conditioning amplifier assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D62-21 (B) - Body ground	Power switch off	11 to 14 V

Result: 

OK 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR